Add signup route

app/router.js

@@ -26,6 +26,7 @@ Router.map(function() {
     this.route('new');
     this.route('edit', { path: ':id/edit' });
   });
+  this.route('signup');
 });
 
 export default Router;

app/routes/signup.js

@@ -0,0 +1,4 @@
+import Route from '@ember/routing/route';
+
+export default Route.extend({
+});

app/templates/signup.hbs

@@ -0,0 +1 @@
+{{outlet}}

tests/unit/routes/signup-test.js

@@ -0,0 +1,11 @@
+import { module, test } from 'qunit';
+import { setupTest } from 'ember-qunit';
+
+module('Unit | Route | signup', function(hooks) {
+  setupTest(hooks);
+
+  test('it exists', function(assert) {
+    let route = this.owner.lookup('route:signup');
+    assert.ok(route);
+  });
+});